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Re: starship-design: FTL travel
In a message dated 4/17/00 9:49:52 PM, firstname.lastname@example.org writes:
>> Oh givern the curent $10,000 a pound launch costs its pretty trivial
>> 90% cost reductions even with only the current launch rates. 99% reductins
>> with reasonable rate increase is pretty doable. Assuming you can get
>> customers and reasonably intrest rates.
> I still think $150 per kg to LEO is a goal we need to set for the best
>price of orbital costs.
Best price? In theory, it should (with a similar sized market) converge to
the price of trans pacific air freight. About $5 a pound. This is because
the general complexity and power levels are similar.
I worked out some absolute minimam costs assuming beamed powe steam rockets
of under a $1 a pound in bulk. (I think it was about that.)
Obviously we won't bother with a starship or anything untill were doing a LOT
of surface to LEO flights.
>> It takes 4,000 technicians about 3 months of heavy work to prep a shuttle
>> launch. Labor and support costs about $200 million per flight. Drop
>> costs about $60 million. A bit more to integrate the cargo. And assuming
>> you don't need to much replacement parts - your up to $300 million before
>> do the launch and pay the mission and launch control peoples payrolls.
> Well that explains why nobody wants to improve the space program,
>3,500+ people would be out of work and the drop tank people out of a
At a minimum. When the Air Force was looking in to it, their shuttle
replacement could relaunch withing 24 hours with a complete grond crew of
under 100, and no mission control.
>> Hate to tell you but in space you can lift and move tons by hand, and
>> very expensive and dangerous to break down large thinks into many small
>> for on site assembly.
>Nope ... inertia is the same. Because F=MA you can in theory move any
>object if that object moves very very slowly.
Inertion isn't the big issue in moving multi ton opjects.
>Things are more expensive in space ( ignoring the cost of getting there)
>because things have to be done by hand, something that the industrial
>revolution has caused people to forget. Guy S may take 8 hours to
>a prefrabicated wall in space, guy E 10 minutes using power tools and
>assembly line fabrication.
Well if you do the assembly on the ground its not as big an issue
>Why do I get the feeling that space access
>will be run by big companies who's goal is profit, like the Company
>for Coal mining?
Or the big resort complexes or liners. Given the highly educated techs these
systems usually use, your not likely to get away with rough consructin camp